1 Short Beep Normal POST, computer is ok.
2 Short Beep POST error, review screen for error code.
Continuous Beep No Power, Loose Card, or Short.
Repeating Short Beep No Power, Loose Card, or Short.
my assumption here is you shorted somehow, check and make sure the box is properly grounded and that there are no metal loose items inside the box touching the mothorboard and that the MB is not touching the case.
One Long and one Short Beep Motherboard issue.
One Long and Two Short Beeps Video (Mono/CGA Display Circuitry) issue.
One Long and Three Short Beeps. Video (EGA) Display Circuitry.
Three Long Beeps Keyboard / Keyboard card error. One Beep, Blank or Incorrect Display Video Display Circuitry.
1: make sure pc is plugged in tightly and directly to a wall outlet (extensions are often not properly grounded)
2:look inside the box and make sure no loose wires, cables, screws are touching the MB
3: look at the ends of each of the connectors from the power suply and make sure they are not touching loose metal and the ones plugged in are tight
4: make sure all cards are seated properly and tight.
5: remove the memory and test it in a secondary machine
6: remove the video card and test it in a second machine (video card short outs are the most common)
7:do the same with the sound card and each card that is in a slot.
8: take the whole machine to a certified shop for full inspection and repair job.
chances are it will end up being either a short from the power supply or the video card.
What was the last thing the computer was doing before it shut down/